I enjoyed my stay at TK. House. It's only 5 mins walk from Sanam Pao station, and can be easily found on Google map, which is a big plus.
The room itself is new and very clean, exactly the same as shown in the pictures, and the modern design of restroom and shower made the stay even more valuable.
There's a nice food court out of Ari station, you can find popular cafe like "after you" here, safe to walk at night and only few BTS stops away from Siam. If you are flying from Don Mueang international airport, here is a pretty good choice for you.